摘要
介绍了基于现场可编程逻辑门阵列(FPGA)的TFT液晶触摸屏控制器的设计方法。利用FPGA构建软核处理器(NiosⅡ),并依据TFT液晶屏和芯片ADS7843的接口时序设计驱动电路,利用内嵌到NiosⅡ处理器中的程序可以自动校正TFT液晶屏和触摸屏的对应点,实践表明,利用SOPC技术实现的TFT液晶触摸屏控制器具有触摸响应速度快,触点相应准确的优点,能有效兼容市面上各种规格的液晶屏,具有良好的实用性和社会价值。
A design method for control unit of the TFT touching screen based on FPGA is described in this paper.Using a NiosⅡ processer built by FPGA,the corresponding point on the TFT and touching screens can be corrected automatically according to the programs in processer and the driver circuit between TFT screen and the ADS7843 chip.It is indicated that the control unit of the TFT touching screen based on SOPC technique has the advantages of quick response and exact touching,which can be compatible with all kinds of TFT touching screen,and it has good practicability and social value.
出处
《液晶与显示》
CAS
CSCD
北大核心
2012年第5期638-641,共4页
Chinese Journal of Liquid Crystals and Displays
